Frequency study on panel type of FG-CNTRC joined conical-conical structures.
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| Title: | Frequency study on panel type of FG-CNTRC joined conical-conical structures. |
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| Authors: | Talebitooti, Mostafa1,2 (AUTHOR) talebi@qut.ac.ir, Heidari Soureshjani, Ali2,3 (AUTHOR), Pakravan, Isaac2,3 (AUTHOR), Talebitooti, Roohollah2,3 (AUTHOR) |
| Source: | Composite Structures. Mar2021, Vol. 259, pN.PAG-N.PAG. 1p. |
| Subjects: | Panel analysis, Hamilton's principle function, Carbon nanotubes, Hamilton-Jacobi equations |
| Abstract: | • The panel is modeled as two individual cones which are merged at the junctions. • Thicker panels may confront with lower quantities of natural frequencies. • At lower embrace angles, variations of frequencies are more than higher ones. • Growth of embrace angles can reduce frequency differences of ups and downs. • Shell's dynamic behavior depends strictly to semi-vertex/embrace angle of the cones. In this paper, frequency behavior of the joined conical-conical panels is investigated while the structures are reinforced with uniform or functionally graded (FG) embedment of carbon nanotubes (CNTs). To consider both rotary inertia and in-plane effects, the formulation is developed upon FSDT considerations. By means of Hamilton's principle the dynamic equations for two cones are derived. To attach two individual panels accurately, continuity conditions is performed at the junctions to satisfy the compatibility of displacements and stress resultants. After imposing simply supported boundary conditions at the straight edges, the set of governing equations are discretized meridionally on the basis of generalized differential quadrature (GDQ) technique. The proposed discretization approach is applicable for arbitrary boundary types imposed on the two curved edges at the initiating and terminating points of the structure. The validation of results is primarily assessed via some comparisons between present data and those previous researches in the favor of individual conical panels and also finite element model for joined conical-conical type. Thereafter, the significant roles of semi-vertex angle, embrace angle, CNT parameters and boundary types on the vibrational features are discussed. [ABSTRACT FROM AUTHOR] |
| Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 148123535 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Frequency study on panel type of FG-CNTRC joined conical-conical structures. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Talebitooti%2C+Mostafa%22">Talebitooti, Mostafa</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> talebi@qut.ac.ir</i><br /><searchLink fieldCode="AR" term="%22Heidari+Soureshjani%2C+Ali%22">Heidari Soureshjani, Ali</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pakravan%2C+Isaac%22">Pakravan, Isaac</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Talebitooti%2C+Roohollah%22">Talebitooti, Roohollah</searchLink><relatesTo>2,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Composite+Structures%22">Composite Structures</searchLink>. Mar2021, Vol. 259, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Panel+analysis%22">Panel analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Hamilton's+principle+function%22">Hamilton's principle function</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+nanotubes%22">Carbon nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Hamilton-Jacobi+equations%22">Hamilton-Jacobi equations</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • The panel is modeled as two individual cones which are merged at the junctions. • Thicker panels may confront with lower quantities of natural frequencies. • At lower embrace angles, variations of frequencies are more than higher ones. • Growth of embrace angles can reduce frequency differences of ups and downs. • Shell's dynamic behavior depends strictly to semi-vertex/embrace angle of the cones. In this paper, frequency behavior of the joined conical-conical panels is investigated while the structures are reinforced with uniform or functionally graded (FG) embedment of carbon nanotubes (CNTs). To consider both rotary inertia and in-plane effects, the formulation is developed upon FSDT considerations. By means of Hamilton's principle the dynamic equations for two cones are derived. To attach two individual panels accurately, continuity conditions is performed at the junctions to satisfy the compatibility of displacements and stress resultants. After imposing simply supported boundary conditions at the straight edges, the set of governing equations are discretized meridionally on the basis of generalized differential quadrature (GDQ) technique. The proposed discretization approach is applicable for arbitrary boundary types imposed on the two curved edges at the initiating and terminating points of the structure. The validation of results is primarily assessed via some comparisons between present data and those previous researches in the favor of individual conical panels and also finite element model for joined conical-conical type. Thereafter, the significant roles of semi-vertex angle, embrace angle, CNT parameters and boundary types on the vibrational features are discussed. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.compstruct.2020.113241 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Panel analysis Type: general – SubjectFull: Hamilton's principle function Type: general – SubjectFull: Carbon nanotubes Type: general – SubjectFull: Hamilton-Jacobi equations Type: general Titles: – TitleFull: Frequency study on panel type of FG-CNTRC joined conical-conical structures. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Talebitooti, Mostafa – PersonEntity: Name: NameFull: Heidari Soureshjani, Ali – PersonEntity: Name: NameFull: Pakravan, Isaac – PersonEntity: Name: NameFull: Talebitooti, Roohollah IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 02638223 Numbering: – Type: volume Value: 259 Titles: – TitleFull: Composite Structures Type: main |
| ResultId | 1 |
